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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "src/traced/service/lazy_producer.h"
     18 
     19 #include "src/base/test/test_task_runner.h"
     20 
     21 #include "perfetto/tracing/core/data_source_config.h"
     22 
     23 #include "gmock/gmock.h"
     24 #include "gtest/gtest.h"
     25 
     26 namespace perfetto {
     27 namespace {
     28 
     29 constexpr const char* kDataSourceName = "android.heapprofd";
     30 constexpr const char* kPropertyName = "persist.heapprofd.enable";
     31 
     32 using ::testing::_;
     33 using ::testing::InSequence;
     34 using ::testing::Return;
     35 using ::testing::InvokeWithoutArgs;
     36 
     37 class MockLazyProducer : public LazyProducer {
     38  public:
     39   MockLazyProducer(base::TaskRunner* task_runner)
     40       : LazyProducer(task_runner, 0, kDataSourceName, kPropertyName) {}
     41 
     42   MOCK_METHOD2(SetAndroidProperty,
     43                bool(const std::string&, const std::string&));
     44 };
     45 
     46 TEST(LazyProducersTest, Simple) {
     47   DataSourceConfig cfg;
     48   cfg.set_name(kDataSourceName);
     49   base::TestTaskRunner task_runner;
     50   auto done = task_runner.CreateCheckpoint("done");
     51   MockLazyProducer p(&task_runner);
     52   InSequence s;
     53   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "1")).WillOnce(Return(true));
     54   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "0"))
     55       .WillOnce(InvokeWithoutArgs([&done]() {
     56         done();
     57         return true;
     58       }));
     59   p.SetupDataSource(1, cfg);
     60   p.StopDataSource(1);
     61   task_runner.RunUntilCheckpoint("done");
     62 }
     63 
     64 TEST(LazyProducersTest, RefCount) {
     65   DataSourceConfig cfg;
     66   cfg.set_name(kDataSourceName);
     67   base::TestTaskRunner task_runner;
     68   auto done = task_runner.CreateCheckpoint("done");
     69   MockLazyProducer p(&task_runner);
     70   InSequence s;
     71   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "1"))
     72       .WillRepeatedly(Return(true));
     73   p.SetupDataSource(1, cfg);
     74   p.SetupDataSource(2, cfg);
     75   p.StopDataSource(2);
     76   task_runner.RunUntilIdle();
     77   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "0"))
     78       .WillOnce(InvokeWithoutArgs([&done]() {
     79         done();
     80         return true;
     81       }));
     82   p.StopDataSource(1);
     83   task_runner.RunUntilCheckpoint("done");
     84 }
     85 
     86 TEST(LazyProducersTest, NoFlap) {
     87   DataSourceConfig cfg;
     88   cfg.set_name(kDataSourceName);
     89   base::TestTaskRunner task_runner;
     90   auto done = task_runner.CreateCheckpoint("done");
     91   MockLazyProducer p(&task_runner);
     92   InSequence s;
     93   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "1"))
     94       .WillRepeatedly(Return(true));
     95   p.SetupDataSource(1, cfg);
     96   p.StopDataSource(1);
     97   p.SetupDataSource(2, cfg);
     98   task_runner.RunUntilIdle();
     99   p.StopDataSource(2);
    100   EXPECT_CALL(p, SetAndroidProperty(kPropertyName, "0"))
    101       .WillOnce(InvokeWithoutArgs([&done]() {
    102         done();
    103         return true;
    104       }));
    105   task_runner.RunUntilCheckpoint("done");
    106 }
    107 
    108 }  // namespace
    109 }  // namespace perfetto
    110